.cesium-tool-tip {
  position: absolute;
  top: 0;
  left: 0;
  z-index: -1;
  min-width: 100px;
  min-height: 30px;
  padding: 0 10px;
  color: #fff;
  line-height: 30px;
  background: rgba(0, 0, 0, 0.6);
  border-radius: 4px;
  visibility: hidden;
  pointer-events: none;
  &:before {
    position: absolute;
    top: calc(50% - 10px);
    left: -10px;
    display: block;
    border-top: 10px solid transparent;
    border-right: 10px solid rgba(0, 0, 0, 0.6);
    border-bottom: 10px solid transparent;
    content: '';
    pointer-events: none;
  }
}
